Your name, email address and phone number will be used to contact you during your involvement in the study. Your age and gender will be captured as data and this will be stored anonymously i.e., under the numerical ID we give you for the study. Should you wish to withdraw from the study at any point, your name, email address and phone number will be deleted, but your age and gender will be saved against the anonymised ID you received for the study. You will be able to withdraw any data you have contributed to the study up to and including your second study visit. Information which is collected about you during the course of the research will be kept strictly confidential unless any information is disclosed which could seriously affect the welfare of yourself or others, in which case a third party may have to be contacted for legal reasons. Your information will not be used for any direct marketing purposes.